/*
 * Copyright (C) 2014 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apframework.okhttp3.recipes;

import java.io.IOException;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

import okhttp3.Call;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class CancelCall {

    private final ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
    private final OkHttpClient client = new OkHttpClient();

    public void run() {
        Request request = new Request.Builder()
                .url("http://httpbin.org/delay/2") // This URL is served with a 2 second delay.
                .build();

        final long startNanoTime = System.nanoTime();
        final Call call = client.newCall(request);

        // Schedule a job to cancel the call in 1 second.
        executor.schedule(() -> {
            System.out.printf("%.2f Canceling call.%n", (System.nanoTime() - startNanoTime) / 1e9f);
            call.cancel();
            System.out.printf("%.2f Canceled call.%n", (System.nanoTime() - startNanoTime) / 1e9f);
        }, 1, TimeUnit.SECONDS);

        System.out.printf("%.2f Executing call.%n", (System.nanoTime() - startNanoTime) / 1e9f);
        try (Response response = call.execute()) {
            System.out.printf("%.2f Call was expected to fail, but completed: %s%n",
                    (System.nanoTime() - startNanoTime) / 1e9f, response);
        } catch (IOException e) {
            System.out.printf("%.2f Call failed as expected: %s%n",
                    (System.nanoTime() - startNanoTime) / 1e9f, e);
        }
    }

    public static void main(String... args) {
        new CancelCall().run();
    }
}
